diff -Naur open2300-1.10/linux2300.c open2300-1.10.patched.rapidfire/linux2300.c
--- open2300-1.10/linux2300.c	2006-04-30 20:43:37.000000000 +0100
+++ open2300-1.10.patched.rapidfire/linux2300.c	2007-01-10 16:59:25.000000000 +0000
@@ -241,19 +241,26 @@
  * Action: Send a http request to Weather Underground
  *
  ********************************************************************/
-int http_request_url(char *urlline)
+int http_request_url(char *urlline, int *rapidfire)
 {
 	int sockfd;
 	struct hostent *hostinfo;
 	struct sockaddr_in urladdress;
 	char buffer[1024];
 	int bytes_read;
-	
-	if ( (hostinfo = gethostbyname(WEATHER_UNDERGROUND_BASEURL)) == NULL )
-	{
-		perror("Host not known by DNS server or DNS server not working");
-		return(-1);
-	}
+	if (rapidfire == 1) {
+	        if ( (hostinfo = gethostbyname(WEATHER_UNDERGROUND_BASEURL_RAPIDFIRE)) == NULL )
+        	{
+                	perror("Host not known (rapid fire) by DNS server or DNS server not working");
+                	return(-1);
+        	};
+	} else {
+		if ( (hostinfo = gethostbyname(WEATHER_UNDERGROUND_BASEURL)) == NULL )
+		{
+			perror("Host not known by DNS server or DNS server not working");
+			return(-1);
+		};
+	};
 	
 	if ( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 )
 	{
@@ -273,7 +280,7 @@
 		return(-1);
 	}
 	// sprintf(buffer, "GET %s\nHTTP/1.0\n\n", urlline);
-	sprintf(buffer, "GET %s HTTP/1.0\r\nUser-Agent: open2300/1.10-2\r\nAccept: */*\r\nHost: weatherstation.wunderground.com\r\nConnection: Keep-Alive\r\n\r\n", urlline);
+	sprintf(buffer, "GET %s HTTP/1.0\r\nUser-Agent: open2300/1.10-2\r\nAccept: */*\r\nHost: %s\r\nConnection: Keep-Alive\r\n\r\n", urlline, WEATHER_UNDERGROUND_BASEURL);
 	send(sockfd, buffer, strlen(buffer), 0);
 
 	/* While there's data, read and print it */
diff -Naur open2300-1.10/Makefile open2300-1.10.patched.rapidfire/Makefile
--- open2300-1.10/Makefile	2006-06-19 12:03:01.000000000 +0100
+++ open2300-1.10.patched.rapidfire/Makefile	2007-01-10 21:44:35.000000000 +0000
@@ -23,6 +23,7 @@
 LOGOBJ = log2300.o rw2300.o linux2300.o win2300.o
 FETCHOBJ = fetch2300.o rw2300.o linux2300.o win2300.o
 WUOBJ = wu2300.o rw2300.o linux2300.o win2300.o
+WUROBJ = wu2300_RapidFire.o rw2300.o linux2300.o win2300.o
 CWOBJ = cw2300.o rw2300.o linux2300.o win2300.o
 DUMPOBJ = dump2300.o rw2300.o linux2300.o win2300.o
 HISTOBJ = history2300.o rw2300.o linux2300.o win2300.o
@@ -46,7 +47,7 @@
 
 ####### Build rules
 
-all: open2300 dump2300 log2300 fetch2300 wu2300 cw2300 history2300 histlog2300 bin2300 xml2300 light2300 interval2300 minmax2300
+all: open2300 dump2300 log2300 fetch2300 wu2300 wu2300_RapidFire cw2300 history2300 histlog2300 bin2300 xml2300 light2300 interval2300 minmax2300
 
 open2300 : $(OBJ)
 	$(CC) $(CFLAGS) -o $@ $(OBJ) $(CC_LDFLAGS)
@@ -62,6 +63,9 @@
 	
 wu2300 : $(WUOBJ)
 	$(CC) $(CFLAGS) -o $@ $(WUOBJ) $(CC_LDFLAGS) $(CC_WINFLAG)
+
+wu2300_RapidFire : $(WUROBJ)
+	$(CC) $(CFLAGS) -o $@ $(WUROBJ) $(CC_LDFLAGS) $(CC_WINFLAG)
 	
 cw2300 : $(CWOBJ)
 	$(CC) $(CFLAGS) -o $@ $(CWOBJ) $(CC_LDFLAGS) $(CC_WINFLAG)
@@ -100,6 +104,7 @@
 	$(INSTALL) log2300 $(bindir)
 	$(INSTALL) fetch2300 $(bindir)
 	$(INSTALL) wu2300 $(bindir)
+	$(INSTALL) wu2300_RapidFire $(bindir)
 	$(INSTALL) cw2300 $(bindir)
 	$(INSTALL) histlog2300 $(bindir)
 	$(INSTALL) xml2300 $(bindir)
@@ -108,10 +113,10 @@
 	$(INSTALL) minmax2300 $(bindir)
 	
 uninstall:
-	rm -f $(bindir)/open2300 $(bindir)/dump2300 $(bindir)/log2300 $(bindir)/fetch2300 $(bindir)/wu2300 $(bindir)/cw2300 $(bindir)/xml2300 $(bindir)/light2300 $(bindir)/interval2300 $(bindir)/minmax2300
+	rm -f $(bindir)/open2300 $(bindir)/dump2300 $(bindir)/log2300 $(bindir)/fetch2300 $(bindir)/wu2300 $(bindir)/wu2300_RapidFire $(bindir)/cw2300 $(bindir)/xml2300 $(bindir)/light2300 $(bindir)/interval2300 $(bindir)/minmax2300
 
 clean:
-	rm -f *~ *.o open2300 dump2300 log2300 fetch2300 wu2300 cw2300 history2300 histlog2300 bin2300 xml2300 mysql2300 pgsql2300 light2300 interval2300 minmax2300
+	rm -f *~ *.o open2300 dump2300 log2300 fetch2300 wu2300 wu2300_RapidFire cw2300 history2300 histlog2300 bin2300 xml2300 mysql2300 pgsql2300 light2300 interval2300 minmax2300
 
 cleanexe:
-	rm -f *~ *.o open2300.exe dump2300.exe log2300.exe fetch2300.exe wu2300.exe cw2300.exe history2300.exe histlog2300.exe bin2300.exe xml2300.exe mysql2300.exe pgsql2300.exe light2300.exe interval2300.exe minmax2300.exe
+	rm -f *~ *.o open2300.exe dump2300.exe log2300.exe fetch2300.exe wu2300.exe wu2300_RapidFire.exe cw2300.exe history2300.exe histlog2300.exe bin2300.exe xml2300.exe mysql2300.exe pgsql2300.exe light2300.exe interval2300.exe minmax2300.exe
diff -Naur open2300-1.10/rw2300.h open2300-1.10.patched.rapidfire/rw2300.h
--- open2300-1.10/rw2300.h	2005-03-05 08:29:13.000000000 +0000
+++ open2300-1.10.patched.rapidfire/rw2300.h	2007-01-10 16:59:15.000000000 +0000
@@ -51,6 +51,8 @@
 /* ONLY EDIT THESE IF WEATHER UNDERGROUND CHANGES URL */
 #define WEATHER_UNDERGROUND_BASEURL "weatherstation.wunderground.com"
 #define WEATHER_UNDERGROUND_PATH "/weatherstation/updateweatherstation.php"
+#define WEATHER_UNDERGROUND_BASEURL_RAPIDFIRE "rtupdate.wunderground.com"
+#define WEATHER_UNDERGROUND_PATH_RAPIDFIRE "/weatherstation/updateweatherstation.php"
 
 #define WEATHER_UNDERGROUND_SOFTWARETYPE   "open2300%20v"
 
@@ -305,7 +307,7 @@
 int write_device(WEATHERSTATION serdevice, unsigned char *buffer, int size);
 void sleep_short(int milliseconds);
 void sleep_long(int seconds);
-int http_request_url(char *urlline);
+int http_request_url(char *urlline, int *rapidfire);
 int citizen_weather_send(struct config_type *config, char *datastring);
 
 #endif /* _INCLUDE_RW2300_H_ */ 
diff -Naur open2300-1.10/win2300.c open2300-1.10.patched.rapidfire/win2300.c
--- open2300-1.10/win2300.c	2005-03-05 08:28:22.000000000 +0000
+++ open2300-1.10.patched.rapidfire/win2300.c	2007-01-10 21:48:58.000000000 +0000
@@ -237,7 +237,7 @@
  * Action: Send a http request to Weather Underground
  *
  ********************************************************************/
-int http_request_url(char *urlline)
+int http_request_url(char *urlline, int *rapidfire)
 {
 	WORD wVersionRequested;
 	WSADATA wsaData;
@@ -267,12 +267,20 @@
 	    return(-1);   
 	}
 
-	if ( (hostinfo = gethostbyname(WEATHER_UNDERGROUND_BASEURL)) == NULL )
-	{
-		perror("Host not known by DNS server or DNS server not working");
-		return(-1);
-	}
-	
+	if (rapidfire == 1) {
+                if ( (hostinfo = gethostbyname(WEATHER_UNDERGROUND_BASEURL_RAPIDFIRE)) == NULL )
+                {
+                        perror("Host not known (rapid fire) by DNS server or DNS server not working");
+                        return(-1);
+                }
+	} else {
+		if ( (hostinfo = gethostbyname(WEATHER_UNDERGROUND_BASEURL)) == NULL )
+		{
+			perror("Host not known by DNS server or DNS server not working");
+			return(-1);
+		}
+	};
+
 	sockfd = socket(AF_INET, SOCK_STREAM, 0);
 	
 	if (sockfd == INVALID_SOCKET)
diff -Naur open2300-1.10/wu2300.c open2300-1.10.patched.rapidfire/wu2300.c
--- open2300-1.10/wu2300.c	2006-04-30 20:44:09.000000000 +0100
+++ open2300-1.10.patched.rapidfire/wu2300.c	2007-01-10 21:49:36.000000000 +0000
@@ -38,9 +38,6 @@
 	
 	/* START WITH URL, ID AND PASSWORD */
 
-	//sprintf(urlline, "http://%s%s?ID=%s&PASSWORD=%s",
-	//		WEATHER_UNDERGROUND_BASEURL,WEATHER_UNDERGROUND_PATH,
-	//		config.weather_underground_id,config.weather_underground_password);
 	sprintf(urlline, "%s?ID=%s&PASSWORD=%s",
                         WEATHER_UNDERGROUND_PATH,
                         config.weather_underground_id,config.weather_underground_password);
@@ -115,7 +112,7 @@
 	}
 	else
 	{
-		http_request_url(urlline);
+		http_request_url(urlline, 0);
 	}
 	
 	return(0);
diff -Naur open2300-1.10/wu2300_RapidFire.c open2300-1.10.patched.rapidfire/wu2300_RapidFire.c
--- open2300-1.10/wu2300_RapidFire.c	1970-01-01 01:00:00.000000000 +0100
+++ open2300-1.10.patched.rapidfire/wu2300_RapidFire.c	2007-01-10 21:46:10.000000000 +0000
@@ -0,0 +1,125 @@
+/*  open2300 - wu2300_RapidFire.c
+ *  
+ *  Version 1.10
+ *  
+ *  Control WS2300 weather station
+ *  
+ *  Copyright 2004-2005, Kenneth Lavrsen
+ *  This program is published under the GNU General Public license
+ */
+
+#define DEBUG 0  // wu2300 stops writing to standard out if setting this to 0
+
+#include "rw2300.h"
+
+/********** MAIN PROGRAM ************************************************
+ *
+ * This program reads all current weather data from a WS2300
+ * and sends it to Weather Underground.
+ *
+ * It takes one parameter which is the config file name with path
+ * If this parameter is omitted the program will look at the default paths
+ * See the open2300.conf-dist file for info
+ *
+ ***********************************************************************/
+int main(int argc, char *argv[])
+{
+	WEATHERSTATION ws2300;
+	struct config_type config;
+	unsigned char urlline[3000] = "";
+	char datestring[50];        //used to hold the date stamp for the log file
+	double tempfloat;
+	time_t basictime;
+	int runforever;
+
+	get_configuration(&config, argv[1]);
+
+        runforever = 1;
+
+        while (runforever == 1) {
+
+	ws2300 = open_weatherstation(config.serial_device_name);
+
+	/* START WITH URL, ID AND PASSWORD */
+
+	sprintf(urlline, "%s?realtime=1&rtfreq=3&ID=%s&PASSWORD=%s",
+                        WEATHER_UNDERGROUND_PATH,
+                        config.weather_underground_id,config.weather_underground_password);
+
+
+	/* GET DATE AND TIME FOR URL */
+	time(&basictime);
+	basictime = basictime - atof(config.timezone) * 60 * 60;
+	strftime(datestring,sizeof(datestring),"&dateutc=%Y-%m-%d+%H%%3A%M%%3A%S",
+	         localtime(&basictime));
+	sprintf(urlline, "%s%s", urlline, datestring);
+
+
+	/* READ TEMPERATURE OUTDOOR - deg F for Weather Underground */
+
+	sprintf(urlline, "%s&tempf=%.2f", urlline,
+	        temperature_outdoor(ws2300, FAHRENHEIT) );
+
+
+	/* READ DEWPOINT - deg F for Weather Underground*/
+	
+	sprintf(urlline, "%s&dewptf=%.2f", urlline, dewpoint(ws2300, FAHRENHEIT) );
+
+
+	/* READ RELATIVE HUMIDITY OUTDOOR */
+
+	sprintf(urlline, "%s&humidity=%d", urlline, humidity_outdoor(ws2300) );
+
+
+	/* READ WIND SPEED AND DIRECTION - miles/hour for Weather Underground */
+
+	if (wind_current(ws2300, MILES_PER_HOUR, &tempfloat) > 100) 
+	{
+	        printf("wu2300 ERROR : Wind speed above 100 mph\n");
+        	exit(1);
+	};
+
+	sprintf(urlline,"%s&windspeedmph=%.2f", urlline,
+	        wind_current(ws2300, MILES_PER_HOUR, &tempfloat) );
+	sprintf(urlline,"%s&winddir=%.1f",	urlline, tempfloat);
+
+
+	/* READ RAIN 1H - inches for Weather Underground */
+	
+	sprintf(urlline,"%s&rainin=%.2f", urlline, rain_1h(ws2300, INCHES) );
+
+
+	/* READ RAIN 24H - inches for Weather Underground */
+
+	sprintf(urlline,"%s&dailyrainin=%.2f", urlline, rain_24h(ws2300, INCHES) );
+
+
+	/* READ RELATIVE PRESSURE - Inches of Hg for Weather Underground */
+
+	sprintf(urlline,"%s&baromin=%.3f",urlline,
+	        rel_pressure(ws2300, INCHES_HG) );
+
+
+	/* ADD SOFTWARE TYPE AND ACTION */
+	sprintf(urlline,"%s&softwaretype=%s%s&action=updateraw",urlline,
+	        WEATHER_UNDERGROUND_SOFTWARETYPE,VERSION);
+
+
+	if (DEBUG)
+        {
+                printf("%s\n",urlline);
+        }
+        else
+        {
+                http_request_url(urlline, 1);
+        }
+
+
+	close_weatherstation(ws2300);
+
+	/* Loop should end here */
+	};
+
+	return(0);
+}
+